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Pneumatic Shut-Off Butterfly Valve

Keywords: metering pump accessories


Pneumatic butterfly valve

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    Advantages of pneumatic switch butterfly valve:

     1. The pneumatic cut-off butterfly valve has a simple structure, is easy to install and disassemble, is convenient for maintenance, and has a wide range of applications.

    2. Bidirectional sealing function, can be installed in any direction, and is not affected by the flow direction of the medium and the spatial position during installation.

    3. The pneumatic cut-off butterfly valve only needs to rotate the disc 90 degrees to complete the switching action. The operating torque is small, labor-saving, and the switching speed is fast.

    4. The single-acting actuator can effectively prevent the automatic spring return from closing or opening the valve when the air source is cut off or the pipeline fails during operation.

    5. The pneumatic cut-off butterfly valve receives the switching signal from the control system to accurately control the valve opening and closing, thereby achieving strict isolation of the medium in the pipeline.




    Standard specifications for pneumatic switch butterfly valves:

    Design standards: GB/T2238-1989

    Flange connection dimensions: GB/T9113.1-2000; GB/T9115.1-2000

    Structure length: GB/T12221-1989

    Pressure test: GB/T13927-2000; JB/T9092-1999

    Applicable media: air, water, sewage, steam, gas, oil, etc.

    Strength test: 0.9 1.5 2.4 3.75
    Sealing test: 0.66 1.1 1.76 2.75
    Low pressure air tight test: 0.5~0.7

    Applicable temperature: Soft seal: -29℃~180℃ Hard seal: -40℃~600℃


    Product parameters

    Technical parameters of pneumatic switch butterfly valve:

    Nominal diameter


    Pressure Level


    Connection method

    Flange or clamp type

    Action range


    Drive mode

    Pneumatic control, air source drive (can be equipped with handwheel)

    Air supply pressure


    Sealing material

    Metal seal, PTFE seal, rubber seal


    Liquid, steam, oil, corrosive media, etc.

    control method

    Switch mode (switch two-position cut-off) air-opening, air-closing, spring return

    Accessory options

    Positioner, solenoid valve, air filter pressure reducer, position retaining valve, travel switch, valve position transmitter, handwheel mechanism, etc.